南方喀斯特流域枯季退水影响因子分析  

Analysis on Low-flow Recession Influencing Factors in South Karst Basin

作　　者：郝庆庆[1] 陈喜[2] 马建良 

机构地区：[1]河海大学水文水资源学院,南京210098 [2]河海大学水文水资源与水利工程科学国家重点实验室,南京210098 [3]宁波市水利水电规划设计研究院,浙江宁波315016

出　　处：《水土保持研究》2009年第6期22-25,29,共5页Research of Soil and Water Conservation

基　　金：国家重点基础研究(973)项目(2006CB403200);教育部科学技术研究重大项目(308012);国家自然科技基金项目(50679025)

摘　　要：为了探讨贵州喀斯特地区枯季径流的退水规律,选取Depuit-Boussinesq退水方程对流域退水进行模拟,将退水指数与从DEM数据提取的各种地形因子之间进行分析。结果表明:地形指数基本与退水指数成正比;退水指数与基流指数成反比;岩性和喀斯特地貌对退水指数的影响较大,这两项指标不仅决定了径流的成分,还决定了退水的时间与速度。In order to study of the low-flow recession law in Guizhou kasrst area, we select the Depuit- Boussinesq equation to simulate ressesion flow. Then we discuss the relationship between recession index and several kinds of terrain factor extracting from DEM. The results showed that： topographic index is directly proportional to recession index; recession index is an inverse proportion to base-flow index; Lithology and karst geomorphology has large influence on recession index and both of the two indicators not only determine runoff composition, but also determine recession＇s duration and speed.

关 键 词：贵州喀斯特 枯季径流 退水曲线 退水指数 地形因子 地形指数 

分 类 号：P332.3[天文地球—水文科学] P642.25[水利工程—水文学及水资源]